code: def configure_commands(self):
      # 3. Returns a list of dictionaries with the format:
      # {"command_name": CustomClientCommand(method=self.custom_server_handler)}
      return [{"run notebook": RunNotebook(method=self.run_notebook)}]
  
file_path: pytorch-lightning/docs/source-app/workflows/build_command_line_interface/app.py
imports: from commands.notebook.run import RunNotebook, RunNotebookConfig
  from lit_jupyter import JupyterLab
  from lightning.app import LightningFlow, LightningApp, CloudCompute
  from lightning.app.structures import Dict
label_desc: Use image node_id 3 for calling the Flow obj's underlying member method code with example usage: obj.configure_commands() and returns: list